Hi Recently there has been a bit of renewed interest and an uptick in activity in the N8VEM SCSI to IDE/SD bridge board project. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI%20to%20ID E%2FSD%20prototypes> &param=SCSI%20to%20IDE%2FSD%20prototypes There are still some prototype boards available in case anyone would like to help bring this project to completion. The prototype boards do work in that they are booting the debug monitor (Zapple) and the IO subsystems are checking out. What we need is the programming to make the Z53C80 SCSI controller work in target mode with the SCSI host mode controller. This board project will be free/open source with software, hardware, and other design information posted to the public. Please contact me if you are interested in helping out at LYNCHAJ at YAHOO.COM I realize there are many ways to accomplish this task and the Z80 based embedded controller board is but one. There may be other valid approaches however none are free/open source projects AFAIK. Please post a link if I am mistaken. Any lessons learned and/or design information from this project could be readily applied to a follow-on project potentially using different technologies. However I think it is important to get this first step working before moving on to another design. I am willing to support a follow-on design once we get this one working properly. I believe with a quick Z80 (8 MHz or greater) there should be sufficient through put for most SCSI-1 applications. It will never be a "speed demon" but the older vintage/classic/hobbyist SCSI-1 machines probably don't need one either. Many of the aging SCSI-1 machines are going to go "offline" forever if the supply of SCSI-1 drives dries up. Thanks in advance for your consideration. Have a nice day! Andrew Lynch